Hermann j



(No Model.)

H. J. SCHNEIDER.

-, GRATE.

No. 536,158. Patented Mar, 19, 1895.

llllll llHll mlllll n: News FEYERS 00.. mum-Erma. wA'smuai-ou. n. c.

UNITED STATES PATENT OFF-ICE.

HERMANN ISOHNEIDER, OF CLEVELAND, OHIO, ASSIGNOR 'TO THE FRANKE STEELRANGE COMPANY, OF SAME PLACE.

GRATE.

SPECIFICATION forming part of Letters Patent No. 536,158, dated March19, 1895.

Application filed July 7,1894. Serial No. 516,842- (No model.)

act description of the invention, such as will enable others skilled intheart to which it appertains to make and use'the same.

My invention relates to improvements in .that class of cooking-stove orrange grates,

which comprises a stationary frame or plate having an opening and teethor projections extending inwardly from opposite sides of said opening,and a single rocking bar arranged in the opening of the frameor plateand having teeth at intermediate points of its length alternating withthe teeth of said frame or plate; and it consists in such a gratecomprising a frame or plate having an opening and teeth or projectionsextending inwardly from opposite sides of the opening, which teeth orprojections are short so that they will not enter too far into thecenter of the fire where they would be likely to be burned off, and asingle rock shaft journaled in the frame or plate and having within-theopening thereof, alternately arranged long and short teeth; the longteeth being arranged in alignment with the spaces between the teethofthe frame, and the short teeth; the

provision of which admits of the teeth ofthe frame being made short,being arranged in alignment with said teeth of the frame, and the saidshort and long teeth being of such a size with respect to the opening inthe frame or plate that but slight or narrow spaces will be formedbetween the different parts of the frame or plate, and the differentparts of the teeth on the rock shaft so that while an almost unbrokenbed is afforded for the fuel, yet the narrow spaces give in theaggregate, a large draft space, which is a desideratum.

The invention also consists in providing the stationary frame or plateat opposite ends with journal recesses to receive the opposite ends ofthe rock shaft,'and removably keying the teeth on saidsha ft, so that byraising one end of the shaft without removing the other from its journalrecess and turning the shaft so as to bring the ends of'the teethuppermost, said teeth may be readily removed from the shaft and newteeth may be placed in position without removing the shaft from theframe. 1

With the foregoing end in view, the invention will be fully understoodfrom the following description and claim when taken in connection withthe annexed drawings, in which Figure 1 is a plan view of my improvedgrate. Fig. 2, is an end viewof the same. Fig. 3, is a cross-sectionalview taken in the plane indicated by the dotted line w, as, on Fig. 1.Fig. 4, is a side view of the shaft of the movable part of the grate.Fig. 5, is a side view of one of the large teeth removed from the shaft.Fig, 6, is a side view of one of the smallalternating teeth removed; andFig. 7, is a perspective, sectional, detail view of said shaft.

Before describing the details of construction, I desire to say that I amwell aware that it is old in cooking stove or range grates asdistinguishable from furnace grates, to provide a stationary frame withan .openingand teeth or projections extending inwardly from oppositesides of said opening, anda rock shaft journaled in the frame and havingteeth arranged alternately with respect to the teeth of the frame, butthe construction is objectionable for the reason that unless the teethof the frame are made long, large spaces are formed between the teethand the rock shaft, which arenot desirable for obvious reasons, and ifthe teeth are made long, they extend into the center of the fire and areliable to be burned off, rendering the grate practically worthless. I

I am also aware that it is old in furnace grates in which a great numberof rock shafts carrying teeth are employed, to provide a framewith shortteeth or projections extending inwardly from oppositev sides and rockshafts having alternately arranged long and short teeth; the short teethof the rock shafts adjacent to the sides of the frame being arranged inalignment with the 'teeth of the frame while the long teeth of the rockshafts arearranged in alignment with the spaces between the said teethof the frame; and I ICC therefore do not desire to be understood asseeking protection upon the broad idea of providing a rock shaft withalternate long and short teeth and arranging such short teeth oppositeto or in alignment with teeth on a stationary frame.

In carrying out my invention,I provide the stationary frame or plate A,of the grate, which is here shown as of an elongated rectangular form inoutline, (although it is obvious that the shape or configuration may bechanged according to the fancy or dictation of the mechanic), with acentral opening a, which is of a comparatively great width. On oppositesides of this central opening and at suitable intervals and also atcorresponding points, I provide inwardly-directed teeth or projectionsb, which taper from their bases to their free ends and these teeth orprojections are also of a comparatively short length so that they willbe strong and durable and will not extend too far into the center of thefire where they would be likely to be burned off. The grate isfurthermore provided at its opposite ends in its longitudinal center,with hearing recesses 0, designed to receive and support the journalends of the shaft, which will be presently described.

The movable part of the grate comprises a rock shaft B, having thejournal ends or portions d, and one end is provided with a key or wrenchseat e, which may receive a crank arm or other implement for turning orrocking it. The shaft is of an angular form in cross-section between thejournal ends, and

as better seen in Fig. 7, this shaft is provided in its sides withlongitudinal passages f, which passages are designed to form airchannelsso as to more effectively cool the parts and thereby prevent unnecessarywarping. The shaft is shown as of fluted configuration, but it isobvious that the shape of the channels might be varied.

0, indicates large teeth, and D, small teeth, which are arrangedalternately upon the shaft. These teeth are respectively formed with acentral, angular aperture g, and the large teeth are furthermorepreferably formed on opposite sides in the center with integral collarsh, although in some cases, the teeth which are design ed to project fromthe shaft, may be formed integral therewith, but it is preferable tohave them formed separately so that they might be removed and replacedby others when impaired or injured. The shaft is preferably providedwith a fixed collar E, near one end, so as to prevent any un-,

due longitudinal movement, and the air pas sage of the shaft is designedto extend through the collar so as to serve more effectively inadmitting air and ventilating the parts.

The large teeth are placed upon the shaft so that they will enter thetapering recesses z, of the stationary part of the grate, and the smallteeth D, are placed so as to come oppo site to or in alignment with thefixed teethor projections b, so that there may beno unnecessary spaceleft between such parts; the fixed collars 7i, of the teeth C, beingdesigned to fix the position of the small teeth so as to bring them inthe plane of the fixed teeth I). These teeth taper on their sides fromtheir centers to opposite ends and the top and bottom longitudinal sidesare similar, so that either side may be used up or down.

The provision of the short teeth D, admits of the teeth I), of the frameor plate, being made short for the reason stated, without the formationof large spaces which would permit the fuel to drop through and wouldalso allow a too great proportion of the fire to remain undisturbed whenthe grate is rocked; and the said long and short teeth being of such asize with respect to the opening in the frame or plate A, that butslight 01' narrow spaces will be formed between the different parts ofthe frame or plate and the different parts of the teeth on the rockshaft, and an almost unbroken bed is afforded for the fuel and in theaggregate a large draft space is formed, which is a desideratum.

The journal ends d, of the rock shaft 13, being simply seated in thebearing recesses c, of the frame or plate A, and the teeth 0, I), beingremovably keyed on the rock shaft, it will be seen that when it isdecided to remove any of the teeth, it is simply necessary to turn therock shaft so as to bring the ends of the teeth uppermost and then pressdownwardly upon the outer end of the rock shaft, when the outer end ofthe frame or plate will serve as a fulcrum, and the inner end of therock shaft will be raised when any one or all of the teeth may beremoved, and if necessary, new ones placed in position, after which thepressure on the outer end of the rock shaft is removed to permit theinner end thereof to resume its seat in the inner bearing recess a.

With a grate thus constructed, ashes and cinders can be quickly andeasily removed without any materiai loss of fuel and as both sides ofthe movable part are similar, should it become necessary to turn thecenter part in order to remove a clinker or prevent the same fromchoking the grate, this can be done, or the movable part can be entirelyrotated, without creating any unnecessarily large opening so as to losethe fuel.

Having described my invention, what I claim is- The herein describedstove or range grate, consisting essentially of the frame or plate A,having the central, longitudinal opening a, and the bearing recesses c,at opposite ends of the opening and also having theshort teeth 1),extending inwardly from opposite sides of said opening a, at intervalsin the length thereof, the single rock shaft B, arranged in the bearingrecesses c, of the frame so as to permit of its being tilted, and thealternate long and short teeth 0, D, removably keyed on the rock shaftso that they may be removed from said shaft when the same has beentilted; the long teeth 0, extending into the spaces ICC between theframe teeth I), on opposite sides of theopening a and the short teeth D;the provision of which admits of the teeth I), of the frame being madeshort, being arranged inalignment with said teeth of the frame, and thesaid short and long teeth being'of such a size with respect to theopening in the frame or plate that but slight or narrow spaces will beformed between the different parts of the stationary frame or plate andthe different [0 parts of the teeth on the rock shaft, all substantiallyas and for the purpose set forth.

In testimony whereof Iaflix my signature in presence of two witnesses.

HERMANN J. SCHNEIDER. Witnesses: P. KNAPPENBERGER, O. H. RAEDER.

